NVP vProxy: nsrvproxy_mgmt fails to redeploy vProxy with connection timeout error

Log extract from of /nsr/logs/adhoc/nsrvproxy_mgmt/vproxy_upgrade_session_vProxy-name.log reports:

ERROR:  [@(#) Build number: ###] DONE: vproxy-installer-#.#.#.#-disk1.vmdk: Post https://HYPERVISOR_ADDRESS/nfc/FOLDER_PATH/disk-0.vmdk: dial tcp HYPERVISOR_IP:443: i/o timeout
ERROR:  [@(#) Build number: ###] vProxy deployment error.
ERROR:  [@(#) Build number: ###] vProxy deployment error: Post https://HYPERVISOR_ADDRESS/nfc/FOLDER_PATH/disk-0.vmdk: dial tcp HYPERVISOR_IP:443: i/o timeout
:nsrvproxy_mgmt: Vproxy Upgrade: Cannot get desired Visd status for Redeploy request. Either an error occured or Visd was unable to process request in expected time.
ERROR:  [@(#) Build number: ###] Post https://HYPERVISOR_ADDRESS/nfc/FOLDER_PATH/disk-0.vmdk: dial tcp HYPERVISOR_IP:443: i/o timeout
ERROR:  [@(#) Build number: ###] Unable to deploy vProxy VPROXY_NAME
ERROR:  [@(#) Build number: ###] Unable to Redeploy vProxy.
ERROR:  [@(#) Build number: ###] Redeploy request failed.
TRACE:  [@(#) Build number: ###] Sending state of 'Failure'.

From the extract above, there was a timeout communicating with port 443.

Firewall issue blocking port 443. This connection may be blocked on a network device or locally on the ESXi host operating system.

The NetWorker server, and vProxy appliance must be able to communicate with port 443 on the vCenter server and ESXi host where the vProxy resides.

NetWorker command: nsrports -t HOSTNAME -p 443
vProxy command: curl -v HOSTNAME:443

Any connection issues in this port communication must be resolved by the VMware and Network administrators.

Port requirements and additional instructions are provided in: NVP vProxy: Troubleshooting Network Connectivity For Backup and Restore Operations

NVP vProxy: How To Upgrade or Redeploy the NVP vProxy Appliance